it was a 15 hour flight from maryland also on board former president george w. bush and his wife laura along with former secretary of state hillary clinton. former presidents bill clinton and jimmy carter are also traveling to south africa. the memorial at a sports stadium is scheduled to begin in the next few hours. what you're looking at right here are live pictures from that stadium as mourners begin to fill the stand. president obama is among the world leaders scheduled to speak at the memorial. >>> a call for change tonight outside a san francisco tech giant. people impacted bid soaring rents and a rise in evictions took to the streets. ktvu's healther holmes is live in the city where demonstrators say the tax breaks have not been worth it. >> reporter: i remember standing here when city officials approved that controversial tax break. now 2-1/2 years later backlash to what some are calling a generous financial package. >> >> reporter: sandra reddick says that after twitter moved in, promises have been broken. >> reporter: two weeks after twitter moved in,